Money Bags Check Script

#!/bin/sh
# some think that months with 5 Fridays, 5 Saturdays and 5 Sundays 
# only happen once in 823 years
# SMBates 29 May 2011

# this script is designed to check that, at least for the duration of UNIX epoch
# Candidate months must have the 1st on a Friday and have 31 days.

YEAR=1970
MONTHS="Jan Mar May Jul Aug Oct Dec"
while [ $YEAR -lt 2038 ]
do
	for MONTH in $MONTHS
	do
		DATE=`date -d "1 $MONTH $YEAR"`
		DAY=`echo $DATE | awk '{print $1}'`
		if [ $DAY = "Fri" ]; then
			#echo $DATE
			cal $MONTH $YEAR
			echo "--------------------------------"
		fi
	done
	YEAR=`expr $YEAR + 1`
done


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